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Mercury 45 Jet 50-55 - Drilling Outboard Mounting Holes (Electric Start Models); Fastening Outboard on Boat Transom (Manual Start Models); (Electric Start Models)

Mercury 45 Jet 50-55
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7A-2 - OUTBOARD INSTALLATION/ATTACHMENTS 90-817643R1 DECEMBER 1996
Lifting Outboard (Manual Start
Models)
Remove cowling from outboard. Use lifting eye on out-
board and lift outboard on boat transom.
51456
Drilling Outboard Mounting Holes
(Electric Start Models)
IMPORTANT: Before drilling any mounting holes, care-
fully read “Determining Recommended Outboard Mo-
tor Mounting Height”, preceding. There is a 3/4 in.
(19mm) difference between outboard mounting holes
in transom bracket.
! WARNING
DO NOT under any circumstances, allow upper out-
board mounting bolts to be closer than 1 in. (25.4mm)
from top of boat transom. Upper mounting bolts must
never be installed thru shims.
IMPORTANT: If using “Transom Drill Fixture”
(91-98234A2), use drill guide holes marked “A” when
drilling outboard mounting holes.
1. Secure (tape) “Outboard Mounting Template” (located
in center of Installation Manual) to outside of boat tran-
som.
2. Align “Top of Boat Transom Line” of template with top
edge of (real) boat transom, not shim(s).
3. Align vertical centerline of template with centerline of
transom.
4. Use a 17/32 in. (13.5mm) diameter drill bit and drill 4
mounting holes perpendicular to and thru transom at
marked hole centers on template.
Fastening Outboard on Boat Transom
(Manual Start Models)
! WARNING
Outboard must be fastened to boat transom with tran-
som clamp handles and transom clamp retainers or
mounting bolts as shown in installation A or B should
the outboard strike an underwater object or be steered
into a sharp turn. Failure to tighten transom clamp
handles along with installing transom clamp retainers
or mounting bolts could result in outboard ejecting
suddenly off boat transom causing serious injury or
death, boat damage or loss of outboard.

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